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ABOVE: PM Stephen Harper joined by former Prime Ministers Mulroney, Campbell and Chretien discusses the historic trip to South Africa

Foreign dignitaries have begun arriving in South Africa for Tuesday’s memorial for Nelson Mandela at a stadium in Johannesburg.

More than 50 heads of state and Commonwealth leaders are expected, including Prime Minister Stephen Harper. Accompanying Harper are former prime ministers Brian Mulroney, Kim Campbell and Jean Chretien.VIDEO: Former PM Brian Mulroney remembers Nelson Mandela as a wonderful person and great man

Here’s a look at some prominent figures who will attend Nelson Mandela’s memorial or funeral.

U.S. president Barack Obama, the first lady and nearly all the living American presidents:President Barack Obama will pay tribute this week to Mandela, making the trip from Washington to South Africa Monday to attend a national memorial service for the anti-apartheid icon. George W. Bush and his wife, Laura, will accompany Obama and first lady Michelle Obama on Air Force One, while former Presidents Bill Clinton and Jimmy Carter will travel separately to South Africa. George H.W. Bush is the only living president who will not attend.(Photo credit: (AP Photo/ Evan Vucci)

Bono:Former South African President Nelson (R) and singer Bono embrace at the ‘46664’ Concert at Green Point Stadium in Cape Town on Nov. 29, 2003. An anti-apartheid activist, the lead singer of U2 was one of Mandela’s close famous friends.(Photo credit: Getty Images)

British Prime Minister David Cameron:In this file photo, Mandela and David Cameron meet in Johannesburg, South Africa on Aug, 23, 2006. Cameron confirmed via Twitter that he would attend the memorial service for the former South African president.

I’ll be at the memorial service in South Africa on Tuesday to commemorate the great man. #RIPMandela

United Nations Secretary-General Ban Ki-moon:The United Nations announced late Sunday that UN Secretary General Ban Ki-moon will travel to Johannesburg for the memorial service in honour of the late Mandela. In the brief statement, Ban “will leave Paris for South Africa on Sunday to attend the official memorial service for former President Nelson Mandela on Tuesday. He will return to New York on Wednesday.”(Photo credit: AP Photo/Alik Keplicz)

Pope Francis:Pope Francis is among the world dignitaries who is expected to attend parts of the memorial for Mandela. In a telegram to South African President Jacob Zuma, Francis paid tribute to Mandela saying, “I pray that the late president’s example will inspire generations of South Africans to put justice and the common good at the forefront of their political aspirations.”(Photo credit: Getty Images)

Prince Charles:The Prince of Wales will stand in his mother and will attend the funeral service of Mandela in the remote village where the anti-apartheid grew up. Prince Charles and Mandela met on numerous occasions, both in South Africa and in Britain. In this file photo below, Prince Charles and Nelson Mandela tour South Africa in 1997.(Photo credit: AP Photo)

The Spice Girls:In this file photo, Mandela is flanked by Spice Girls Mel B (left) and Geri Halliwell (right) during a photocall with the Spice Girls at the presidential residence Mahlamba Nalopfu in Pretoria, South Africa on May 31, 1998. The Spice Girls are among the global starts attending the four-hour memorial service on Tuesday.(Photo credit: AP Photo)Iranian President Hassan Rouhani:Iran President Hassan Rouhani is among the world leaders who will attend Mandela’s funeral service.(Photo credit: AP Photo)

Singer Peter Gabriel:Pop star and human rights activist Peter Gabriel will attend the funeral service for Mandela. Gabriel brought the idea of ‘The Elders,” to Mandela, a group of world leaders founded by South Africa’s former leader in 2007. In this file photo below, Peter Gabriel and Nelson Mandela attend the Artist Press Conference and Fundraising Lunch at the Gallagher Estate in Johannesburg, South Africa on Nov. 30, 2007.(Photo credit: AP Photo)